Blind-slat fastening



A. S. ROBINSON & W. D. SUNDERLIN. Blind-Slat Fastening.

No. 223,653.- Patented Jan. 20,1880.

' WZZJW %'izzesses. v r

N-Pm FHDTOUTNQGRAPHER, WISHINGTDN. D.,C-

UNITED STATES PATENT OFFICE.

ALBERT S. ROBINSON, OF ALBANY, AND WILLIAM D. SUNDERLIN, OF GREENISLAND, NEW YORK.

BLlND-SLAT FASTENING.

SPECIFICATION forming part of Letters Patent No. 223,653, dated January20, 1880.

Application filed April 24, 1879.

To all whom it may concern:

Be it known that we, ALBERT S. ROBINSON, of the city and county ofAlbany, and WIL- LIAM D. SUNDERLIN, of Green Island, county of Albany,State of New York, have invented certain new and useful Improvements inDevices for Fastening the Slats of Blinds, which improvements are fullydescribed in the following specification and the accompanying drawings,in which- Figure 1 represents a perspective view of the device embodyingthe improvements in our invention; and Fig. 2 is a side view of thesame, illustrating its manner of operating with the slats of a blind.

Our invention consists of a pivoted finger button provided with apendent or inwardlyprojecting holding-lip, a series of two or morenotches made in the edge of the button, and a curved slot andholding-pin arranged in such a manner that the holdinglip and thenotches will each be capable of engaging with a slat ofa series, so asto hold it firmly in the position it will be set to.

The object of our invention is to produce a device by which the slats ofa blind will be looked, as maybe desired, either closed or half or fullopen.

In the drawings, A rep: esents a side of the frame of a blind, and a a aare slats, pivoted in the same in the manner practiced by the trade. Bis a finger-button, made of either sheet or cast metal, with a form asshown, or any other that may be selected. Made in the lower end of thesaid button is the pivot-hole 0, through which a screw is passed andmade to enter the wood of the frame, to serve as a pivot on which thebutton is to swing. Madein the upper end of the button is the oblongcurved slot e. Made with the side of the button lying over the frame isa projecting finger-piece, b,

by whichthe button may be adjusted to any position selected. Made withthe face-edge of the button, and turned down from the same, is theholding-lip d, having its lower edge made with a bevel correspondingwith the line of bevel of the face of the slat when it is closed on itscontiguous or adjoining slat. Made in the face-edge of the button,between the holding-lip d and the pivot end of the same, are

notches s and as, having their side edges made inclined in relation tothe line of edge the notches are made in, so that when thebutton ismoved outward from the frame over the slats to engage with a slat to besecured by either of the notches the sides of the notches will eachcorrespond in their direction with the surface-lines of the slat held.

The manner in which our improved slatfastening device operates is asfollows: The device is secured to the frame of the blind by thepivot-screw c and the binding guide-screw e, as shown, with theholding-lip d lying close against the inner side surface of the frame inwhich the slats a a a are pivoted. When it is desired to lock the slatsclosed, as shown by full lines, the slats are to be closed together flatand the button-piece is to be moved inward from over the frame to overthe slats, as shown in Fig. 1, to the full limit of the curved slot 0and holding-screw 0, when the slat will be locked to its adjacent orcontiguous slat, and Will bind it, with all others in connection, in afixed position, close locked together. When it is desired to lock theslat in a half-open position the button is to be made to engage with theslot by notch s, and when it is to be locked in a full-open position theslat is to be locked by the notch as, as indicated by dotted lines inFig. 2.

This device is simple and inexpensive, and can be readily applied to theblind by ordinary persons, and is not liable to get out of order or'tohe deranged.

Having described our invention, What we claim, and desire to secure byLetters Patent,

The blind-slat fastening device composed of the pivoted fin ger-buttonprovided with curved slot 0, holding-lip d, and notches s and .r, allcombined and arranged substantially as and for the purposes set forth.

Witnesses CHARLES SELKIRK, ALEX. SELKraK.

